There are at least two possible causes for the force sensor to read a high constant value.

  1. It has been stressed beyond its capacity and the strain gauge has been physically damaged.
  2. The wiring has been damaged and has been short circuited, making the sensor read a constant high voltage.

In either case the load cell must be returned for repair. Contact Vernier Technical Support at 888-837-6437.

Vernier Structures & Materials Tester (VSMT) Troubleshooting and FAQs
Go Direct Structures & Materials Tester (GDX-VSMT) Troubleshooting and FAQs

For instructions for removing the force sensor from your Structures Tester go to:
How do I remove the force sensor from the Vernier Structures and Materials Tester (VSMT)?
Do I need to send the entire unit in to repair my Go Direct Structures & Materials Tester?